Plan the perfect garden with our interactive tool →

When Do Oak Trees Bloom?

...
Jupiterimages/Photos.com/Getty Images

Although most oak trees are capable of blooming acorns at approximately two decades of maturity, the majority produce the seed with vigor between 50 and 80 years of age; production falls off drastically as the tree nears a century of growth.

Time Frame

Oak trees begin to bloom in the spring as rising temperatures encourage fresh leaves to unfurl and flower buds to expand. Different segments of the species bloom at their own pace. “Red oaks tend to flower about two weeks earlier than white oaks,” reports the University of Tennessee Extension service.

Blooms

Oak trees are monoecious, meaning that both male --staminate -- and female -- pistillate -- flowers reside on the same tree. Male blooms tend to be the most visible and, normally by April, they produce long, worm-like entities that droop downward from the base of new branches. The male flowers emit a pollen that allergy sufferers often notice by mid-April.

  • Although most oak trees are capable of blooming acorns at approximately two decades of maturity, the majority produce the seed with vigor between 50 and 80 years of age; production falls off drastically as the tree nears a century of growth.
  • Male blooms tend to be the most visible and, normally by April, they produce long, worm-like entities that droop downward from the base of new branches.

Acorns

The oak tree continues to bloom with male flowers from surrounding trees pollinating adjacent female flowers. Six ovules at the bottom of each female flower contain eggs and, eventually, one of these egg containers will become fertilized and bloom into an acorn. The majority of oak trees begin producing acorns at 20 years of age.

Related Articles

The Life Cycle of Oak Trees
The Life Cycle of Oak Trees
When Does a Red Maple Tree Bloom?
When Does a Red Maple Tree Bloom?
When Does a Pecan Tree Bloom?
When Does a Pecan Tree Bloom?
Are There Male & Female Oak Trees?
Are There Male & Female Oak Trees?
When Do Southern Magnolia Flowers Bloom?
When Do Southern Magnolia Flowers Bloom?
Flowering Trees For Ohio
Flowering Trees For Ohio
Why Oak Trees Don't Produce Acorns Until They Are 50 Years Old
Why Oak Trees Don't Produce Acorns Until They Are 50...
Identification Guide for Flowering Trees
Identification Guide for Flowering Trees
How to Prune Little Gem Magnolia Trees
How to Prune Little Gem Magnolia Trees
Which Flowering Trees Bloom the Longest?
Which Flowering Trees Bloom the Longest?
When Do Maple Trees Bloom?
When Do Maple Trees Bloom?
When Do Apple Trees Bloom?
When Do Apple Trees Bloom?
What Is the Purpose of Flowers?
What Is the Purpose of Flowers?
Acorns & Oak Trees
Acorns & Oak Trees
Information on Oak Trees
Information on Oak Trees
Lifespan of a Flowering Crabapple Tree
Lifespan of a Flowering Crabapple Tree
When Are Hydrangeas in Season?
When Are Hydrangeas in Season?
What Does a Tulip Tree Look Like?
What Does a Tulip Tree Look Like?
How Long Does It Take a Moonflower to Grow & Bloom?
How Long Does It Take a Moonflower to Grow & Bloom?
Garden Guides
×